Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution - Nessus

Critical Plugin ID: 85005

This page contains detailed information about the Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 85005
Name: Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution
Filename: accellion_fta_oauth_token_rce.nasl
Vulnerability Published: 2015-07-10
This Plugin Published: 2015-07-27
Last Modification Time: 2021-01-19
Plugin Version: 1.7
Plugin Type: remote
Plugin Family: CGI abuses
Dependencies: accellion_file_transfer_appliance_detect.nbin
Required KB Items [?]: installed_sw/Accellion Secure File Transfer Appliance

Vulnerability Information

Severity: Critical
Vulnerability Published: 2015-07-10
Patch Published: 2015-05-25
CVE [?]: CVE-2015-2857
CPE [?]: cpe:/h:accellion:secure_file_transfer_appliance

Synopsis

The remote device is affected by a remote command execution vulnerability.

Description

The remote Accellion Secure File Transfer Appliance is affected by a remote command execution vulnerability due to improper sanitization of user-supplied in put to the 'oauth_token' parameter in the get_oauth_customer_name() and verify_oauth_token() functions. The parameter is passed to a system() command through the 'twsgetStatus' handler. A remote, unauthenticated attacker can exploit this vulnerability to execute arbitrary commands on the remote host.

Note that the twsPut, twssetStatus, twsGet, Find, Put, and mPut handlers are also reportedly affected by this issue; however, Nessus has not tested these additional handlers.

Solution

Upgrade to Accellion Secure File Transfer Appliance version FTA_9_11_210 or later.

Public Exploits

Target Network Port(s): 80, 443
Target Asset(s): Services/www
Exploit Available: True (Metasploit Framework, Exploit-DB)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution vulnerability:

Metasploit: exploit/linux/http/accellion_fta_getstatus_oauth
[Accellion FTA getStatus verify_oauth_token Command Execution]
Exploit-DB: exploits/hardware/remote/37597.rb
[EDB-37597: Accellion FTA - getStatus verify_oauth_token Command Execution (Metasploit)]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2015-2857
CVSS V2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:F/RL:OF/RC:ND

CVSS Base Score:	7.5 (High)
Impact Subscore:	6.4
Exploitability Subscore:	10.0
CVSS Temporal Score:	6.2 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.2 (Medium)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CVSS Base Score:	9.8 (Critical)
Impact Subscore:	5.9
Exploitability Subscore:	3.9
CVSS Temporal Score:	9.1 (Critical)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	9.1 (Critical)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(85005);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2015-2857");
  script_xref(name:"EDB-ID", value:"37597");

  script_name(english:"Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution");
  script_summary(english:"Attempts to execute a command.");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is affected by a remote command execution
vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Accellion Secure File Transfer Appliance is affected by a
remote command execution vulnerability due to improper sanitization of
user-supplied in put to the 'oauth_token' parameter in the
get_oauth_customer_name() and verify_oauth_token() functions. The
parameter is passed to a system() command through the 'twsgetStatus'
handler. A remote, unauthenticated attacker can exploit this
vulnerability to execute arbitrary commands on the remote host.

Note that the twsPut, twssetStatus, twsGet, Find, Put, and mPut
handlers are also reportedly affected by this issue; however, Nessus
has not tested these additional handlers.");
  # https://blog.rapid7.com/2015/07/10/r7-2015-08-accellion-file-transfer-appliance-vulnerabilities-cve-2015-2856-cve-2015-2857/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8f6a5d7f");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Accellion Secure File Transfer Appliance version
FTA_9_11_210 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:ND");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-2857");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Accellion FTA getStatus verify_oauth_token Command Execution');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/07/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/05/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/07/27");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:accellion:secure_file_transfer_appliance");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2015-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("accellion_file_transfer_appliance_detect.nbin");
  script_require_keys("installed_sw/Accellion Secure File Transfer Appliance");
  script_require_ports("Services/www", 80, 443);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("install_func.inc");

app = "Accellion Secure File Transfer Appliance";
get_install_count(app_name:app, exit_if_zero:TRUE);

port = get_http_port(default:443);

install = get_single_install(app_name:app, port:port);
install_url = build_url(port:port, qs:"/");

data = "transaction_id=1&oauth_token='%3becho '";
clear_cookiejar();
res = http_send_recv3(
  method : "POST",
  port   : port,
  data   : data,
  item   : "/tws/getStatus",
  add_headers  : make_array("Content-Type","application/x-www-form-urlencoded"),
  exit_on_fail : TRUE
);
if (!egrep(pattern:'"result_msg":"Success"', string:res[2]))
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url);

security_report_v4(
  port        : port,
  severity    : SECURITY_HOLE,
  cmd         : 'echo',
  line_limit  : 3,
  request     : make_list(http_last_sent_request()),
  output      : chomp(res[2])
);

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/accellion_fta_oauth_token_rce.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\accellion_fta_oauth_token_rce.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/accellion_fta_oauth_token_rce.nasl

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How to Run

Here is how to run the Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select CGI abuses plugin family.
On the right side table select Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution plugin ID 85005.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl accellion_fta_oauth_token_rce.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a accellion_fta_oauth_token_rce.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - accellion_fta_oauth_token_rce.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state accellion_fta_oauth_token_rce.nasl -t <IP/HOST>

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References

See also:

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Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file accellion_fta_oauth_token_rce.nasl version 1.7. For more plugins, visit the Nessus Plugin Library.

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Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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